"I think because we could do it biologically and have our own child we decided to try this"

In this quote, Cheryl Tiegs is discussing her choice to have a kid through biological means instead of adoption or other methods. She discusses that the capability to have their own kid was a significant consider their decision to pursue this route. This suggests that Tiegs and her partner wanted to experience the physical and psychological journey of pregnancy and childbirth, and to have a child that was biologically associated to them. This choice may have been influenced by societal norms and expectations, as well as individual desires and beliefs. In general, Tiegs is expressing her reasoning for picking to have a child through biological ways.